*{
    margin: 0;
    padding: 0;
}
#box{
    background-color: #F6F6F6;
    width: 100%;
}
#left{
    float: left;
    width: 15%;
    background-color: #F6F6F6;
}

#content{
    float: left;
    width: calc(100% - 15% - 15%);
    background-color: #F6F6F6;
}

#right{
    float: right;
    width: 15%;
    background-color: #F6F6F6;
}
#left1{
    float: left;
    width: 15%;
    background-color: #FFF4EF;
    height: 100%;
}

#content1{

    float: left;
    width: calc(100% - 15% - 15%);
    background-color: #FFF4EF;
    height: 100%;
}

#right1{
    float: right;
    width: 15%;
    height: 100%;
    background-color: #FFF4EF;
}
a{
    text-decoration: none;

}

#bo{
    z-index: 0;
    background-image: url("../images/l_img.png");
    height: 425px;
    background-repeat: no-repeat;
}
#deng{
    margin-right: 2px;
    border-radius: 5px;
    box-shadow: 0px 2px 5px gray;
    background-color: white;
    width: 40%;
    height: 260px;
}
#zhu{
    margin-right: 2px;
    border-radius: 5px;
    box-shadow: 0px 2px 5px gray;
    background-color: white;
    width: 40%;
    height: auto;
}
#user{
    width: 80%;
    height: 15%;
}
#pwd{
    width: 80%;
    height: 15%;
}
#btn{
    color: white;
    border: none;
    background-color: #FA550C;
    width: 30%;
    height: 15%;
    margin-left: 20%;
}
.da{
    width: 80%;
    height: 10%;
}